Welt-laying machine



Ca P. STAN BON.

WELT LAYING MACHINE.

APPLICATIDN HLED MAR. 17, w19.

1,3'70,6 1 3, Patented Mar. 8, 1921.

24AM/9M i fw@ Www/ UNITED ySTATES PATENT OFFICE.

CHARLES P. STANBON, OE' LYNN, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY CORPORATION, OF PATTERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

WELT-LAYING- MACHNE.

Specification of Letters Patent Patented Mar. 8, 1921.

Application filed March 17,1919. Serial No. 283,158.

To all 'whom it 'may coacem: Y

Be it known that I, CHARLES P. STANBoN, a citizen of the United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented certain lmprovenientsI in Welt-Laying Machines, of which the following description, in connection with the accompanying drawings, is a speciication, like reference characters on the drawings indicating like parts in the several gures.

This invention relates to machines for applying a strip of stock to a blank and is herein illustrated as embodied in a machine for laying a piece of Welting along' the margin of a sole.

In the manufacture of McKay shoes it is commonly the practice to provide a mock or imitation Welt in order to give the shoe an appearance more desirable to the trade. lVelting is supplied in long strips; and it is commonly the practice to coat one side of the Welting with cement and then to apply the ivelting to successive soles, l machine by Which this applying operationnmaybe performed is shown in the patent to McLeod, No. 957,987 and comprises an applying roll over Which the ivelting is guided, a roll for supporting the sole during the applying operation and a knife for severing the Welting when the proper length has been applied. In that machine after a sole has been operated upon, the severed end of the unapplied portion of the Welting is not held in any Way, with the result that when the next sole is presented to the machine the operator is obliged to place this free end properly on the sole before beginning the next Welt laying or applying operation; and this preliminary placing of the severed end of the Welting on the sole has to be repeated for each sole presented to the machine.

According to one feature of the present invention, means are provided for holding this severed end of the strip in position to be applied to the next sole or other blank presented to the machine. ln the illustrative machine the knife is so constructed and operated that when itsevers the strip at the completion of the first strip-applying operation it holds the severed end of the unapplied portion of the strip against the applying roll, in position to be applied propei'ly to the next blank presented to the machine, and is released as soon as the presentation is completed. lith this construction the operator is relieved of the necessity which hitherto existed of manually guiding the severed end of the unapplied portion of the strip to each blank at the beginning of each strip-applying operation.

This and other features of the invention, includingcertain details of construction and combinations of parts Will be described as embodied in an illustrative machine and pointed out in the appended claims. Y Referring now to the accompanying drawings,

Figure 1 is a front view, principally in section, of a machine in Which the present invention is embodied;

Fig. 2 is an end elevation;

Fig. 3 is a perspective showing the mechanisczln for locking and unlocking the knife, an

Fig. 4L is a perspective showing a portion of the starting and stopping mechanism.

Rotatably mounted in the frame 5 of the machine is a hollow driving shaft 7 having loosely mounted thereon a driving pulley 9 to which power may be applied continuously from any suitable source. This pulley has a flat face which may be brought into contact with a ring 11 of suitable friction material carried by a driving disk 13 Which is fast to the hollow shaft 7 The pulley 9rmay be moved to the left into engagement With the disk 13 in either of tivo Ways, by moving to the left a rod 14: or by turning a crankarm 15.- The rod is slidable Within the holloiv shaft 7 and has threaded into its outer end a capscrevv 16. Between the head of this screw and the pulley 9 are located the hub 17 ofthe crank-arm 15 and a collar 1S, the hub being loose on the shaft and the collar being slidably keyed to the shaft. The hub 17 is thicker at the top than at the bottom, as viewed in Fig. 1, and the collar is thinner at the top than at the bottom, the tvvo adjacent faces of the hub and the collar being complementary-cam faces so arranged that When the crank-arm is turned the collar will be moved to the left to force the pulley 9 into engagement with the driving disk 13. TVith this sort of manipulation, the rod 14 is held in the position shown. If, on the other hand, the rod is pulled to the left, the head of the cap screw 16 will move the hub 17 and collar18 to the left to move the pulley 9 into engagement with the disk 13. It is also possible to combine these two means for applying power that is, the rod may be pulled to the left sufliciently to cause the pulley to engage the disk lightly, and then the crank-arm l5 may be manipulated. As long as the crank-arm is not turned any faster than the pulley 9 is rotating the shaft 7 no eifect will be produced; but, by turning the crank-arm faster, the pulley 9 may be forced into more intimate Contact withthe disk 13 to cause the shaft 7 to rotate faster. This mechanism for controllingthe rate of rotation of the shaft 7 is known as a hand-belt-power drive, a type of .which is shown in my prior Patent No.

washers, one of which is a split springwasher being loosely mounted on the screw 19 between its head and the yokeV as shown.V

A small -adjusting screw 22 is threaded through an upstanding lug on the bellcrank lever 20 and has threaded thereon a lock nut 23. A treadle rod 24 has mounted thereon a fixed collar 28 and a loosespringpressed washer 30 between which the horizontal arm of the bell-crank lever extends. A coiled spring 32, located between the frame of the machine and a collar 34 xed to the rod, normally holds the rod 14 in the position shown. Depression of a treadle (not shown) which is connected with the rod 24'will thus apply pee/er to the shaft 7 and releaseof the will, effect withdrawal of power.

Fast to the Shaft 7 is a double gear 25, 26. 1When power is applied to the shaft, by pulling down upon the treadle-rod 24, a brake is withdrawn from engagement with the gear 25; and when the treadle-rod is allowed to rise, the brake is applied to the gear. This brake mechanism, which is shown best in Fig. 4, comprises a rod 36 carried by a bell-crank lever 38, said lever, like the bell-crank lever 20 being pivoted about the rod 21 and having its horizontal arm received between the collar 28 and thel yielding washer 30. The portion of the arm of the lever 38 which is received between the collar 28 and washer 30 is somewhat thicker than the corresponding portion of the bell-crank lever 20. In a socket in the end of the rod 36 is a friction plug 40 backed 1nya spring which is somewhat compressed in the position of parts shown. With this construction the plug 40 will be withdrawn from the gear 25 just before power is applied to the ge-ar and will be moved back into the position shown just after power is withdrawn from the gear. The purpose of this brake is to facilitate the stopping of the machine at just the desired point with respect to the work.

The members or" the double gear 25, 2G are adapted to mesh with a small gear 27 and a large gear 29, the two last-named gears being mounted upon a common hub which is slidably connected with the shaft 31 of the upper :or applying roll 33 by a key 35. rod 37 slidable in the frame of the machine and having a downwardly turned end extending into a groove in the hub ofthe gears 27, 29furnishes means for sliding the gears on theshaft, said rod being held in either one of two positions by a spring-pressed pawl 39.y In the position shown, the gears 25 and 27 are in mesh, but by pulling' the rod 37 to the'right these gears may be disengaged and the gears 26, 29 caused to drive the shaft 31 at a lower speed.

The shaft 41 of the lower or supporting roll 43 is rotatable in a sleeve-bearing 45 which is pivoted on trunnions mounted in brackets on the frame of the machine, the axis of thetrunnions being shown at 47 and one of the brackets at 49. Near its outer end the bearing 45 is pivoted at 51 to a treadle-rod 53, a spring 55, located between a collar on the rod and a washer resting upon the frame of the machine, serving at all times to urge the bearing 45, and with it Vthe supporting roll, upwardly so as to hold the work yieldingly against the applying roll. A gear 57 fast to the shaft 31 meshes with a gear 59 of equal size fast to the end of the shaft 41, the teeth of these gears being of a length suiiicient to permit lowering of the roll 43 about the pivot 47 when the treadle-rod 53 is pulled downwardly to permit removal of a finished piece of work and insertion of another sole blank between the rolls.

` The welting 100 which has previously been coated on one side with cement, is led from any suitable source over a guide pulley 61 and down through a curved guide 63 which causes it to run over a portion of the surface of the applying roll 33, 'the guide delivering the free end of the welting at a point just in advance of the bite of the rolls 33, 43. An idle roll 44 holds the welting against the guide pulley 61. An adjustable edge gage 65 is provided to facilitate guiding the work as it passes through the machine.

In the operation of the machine the lower roll 43 is depressed to permit a sole to be placed between the rolls, the end of the welting 100 is positioned properly on the sole, and the roll 43 released. Power is then applied to the rolls to rotate them, and the sole is guided properly by the operator, the rate of rotation of the rolls being controlled, if

desired, by manipulation of the crank-arm 15. The welting is thus laid or applied along the margin of the sole beginning at a pointA on the shank of the sole at one side thereof running around the toe and ending at a point approximately opposite on the other side. At this point the clutch is released, and the machine comes to 'rest. Hitherto it has been customary next to sever the welting on a bevel either with a hand-` knife or with a treadle-operated knife such as that shown in the patent to McLeod. In either case the free end of the unapplied welting was left unsupported so that, when the next sole was presented to the machine, the operator was obliged to guide the free end into proper place on the sole before starting the machine again. In the present machine the welting is severed, and the free 'end held against the applying roll while the supporting roll is lowered to permit removal of the finished work and insertion'of the next sole, and is then automarically released when the supporting roll is allowed to rise. In the illustrative machine both the severing and the holding of the welting are accomplished by the knife.

ri`he segmental knife 07 is clamped by a screw 69 in a suitable holder 71, the holder being pivoted at 73 to a block 75 which is adjustable in a guideway in a carrier 7T. After loosening the screw (39, the knife may be adjusted in and out of the holder 71; by manipulatingthe adjusting screw 79 the holder` may be adjusted about the pivot 73, and by manipulating the thumb screw 81 the block T5, and with it the knife, may be raised and lowered. These adjustn'ients are to provide for welting of different thickness and to obtain the proper relation between the operative end of the knife and the upper roll 33 so that when the knife is swung, in a Inanner presently to be described, into the cutting-off position shown in Fig. 2, the severed end of the unapplied welting will be. held firmly against the face of the roll in position to be applied properly to the next sole presented to the machine. In Fig. 2, the severing operation has just been completed. The next step is to depress the treadle (not shown). of the rod 53 thereby lowering the roll 43. The sole 200, with the welt attached may then be removed from the machine and another sole located properly between the rolls. The treadle is then released whereupon the knife is swung upwardly to release the end of the welting and to permit the welt laying or applyingr operation to be carried out again.

The carrier 7T is fast to the outer end of a rock-shaft 33, the inner end of which is clamped l: Y a pinch-screw 85 to the hub of an arm 87, said arm being pivoted at S9 to a head fast to the upper end of a treadle rod 91. A coiled spring 93 having its lower end resting upon the frame of the machine and its upper end abutting against the collar 95 on the rod 91 holds the knife normally in raised inoperative position. The head 90 has a lug or tooth over which a springpressed locking pawl 97 moves when the treadle rod 91 is pulled downwardly. The effect of this construction is to lock the knife in the position shown in Fig. 2 when the lower roll 43 is depressed to permit removal of the work, the severed unapplied end of the welt thus being pinched between the surface of the cutter adjacent to its cutting edge and the welt applying roll 33. In order to disengage the pawl 97 when the roll 43 rises under the influence of the spring 55, a ratchet wheel 99 fast to the end of a stem 101, which is rotatable in the frame of the machine, has inclined side teeth or projections 103 which are adapted successively to engage a shoulder on the pawl and force the pawl back out of engagement with the head 90. In order to turn the ratchet 99, a pawl 105 is pivoted to a boss o n the sleeve-bearing 45 of the shaft of the lower roll 43 and is held in contact with the ratchet by a coiled spring 107. Consequently, when the bearing 45 is swung` downwardly, the pawl 105 rides over the peripheral teeth of the ratchet; but, when the bearing is forced upwardly by the spring 55, the ratchet is turned, and one of the high portions of the side teeth 103 engages the shoulder on the locking pawl 97 to disengage it from the head 90 and thereby permit the `spring 93 to rock the shaft 83 and move the knife to inoperative position. This frees the end of the welting. The side teeth 103 on the ratchet are so constructed and arranged and the rotation of the ratchet is such that whenever the ratchet iS at rest the locking pawl 97 is free to engage the lug on the head 90 if the lug is brought into position to be engaged.

Although the invention has been set forth as embodied in a particular machine, it should be understood that the invention is not limited in the scope of its application to the particular machine which has been shown and described.

Having thus described my invention, what I claim as new and desire to secure by lietters Patent of the United Sates is:

1. A machine for applying a strip of stock o a blank, having in combination, a stripapplying roll, a blank-supporting roll, means for rotating said rolls, and means for severing the strip and holding the severed end of the unapplied portion of the strip in position to be applied to the next blank presented to the machine.

2. A machine for applying a strip of stock to a blank. having in combination, a strip-applying roll, a blank-supporting roll, mea-ns for rotating said rolls, means for severing the strip and holding the severed end ot the unapplied portion or' the strip in position to be applied to the next blank presented to the machine, means for causing movements ot separation and approach of the rolls, and means responsive to one of these movements 'for releasing the severed end.

3. il. machine for applying a strip oi stock to a blank, having in combination, a strip-applying member, a blank-supporting member, and means for severing the strip and holding the severed end against the applying member in position to be applied to the nent blank'presented to the machine.

il. A machine 'for applying a strip oit stock to a blank, having in combination, an applying roll, a supporting roll, and means 'for severing the strip and holding the severed end et the unapplied portion thereot against the applyingrOll.

A' machine for applying a strip oit stock to a blank, having in combination, an applying roll, a supporting roll, means :tor severing the strip and holding the severed end of the unapplied portion thereol1 against the applying roll, and means tor releasing said end prejiaratory to applying a strip to another blank.

6. A. machine tor applying a strip oi stock to a blank, having in combination, an aipiplying roll, a sn',iporting roll, means :tor severing the strip and holding the severed end of the unapplied portion thereo'l the applying roll, and means, responsive to the bringing into operative posit on et a part of the machine preparatory to the operation upon another blank, for releasing said end.

7. A machine for applying a strip ot stock to a blank, having in combination, an applying rollover which the strip runs, a blanlosupporting roll, means to rotating the rolls, a cutter, and means tor moving the cutter to sever the strip after a desired amount has been applied and 'to hold the severed end of the nnapplied portion of the strip against the applying roll in position to be applied to the next blank presented to the machine.

8. A machine for applying a strip of stock to a blank, having in combination, an applying roll over which the strip runs, a blank-supportingroll, means vfor rotating the rolls, a cutter, means for moving the cntter to sever the strip after a desired amount has been applied and to hold the severed end ot' the unapplied portion of the strip against the applying roll in position to be applied to the next blank presented to the machine, and means for moving the cutter to release said end.

9. A machine for applying a strip ot stock to a blank, having in combination, an applying roll over Which the strip runs,

a blank-supporting roll, means for rotating the rolls, a cutter, means for moving the cutterI to sever the strip alter a desired amount has been applied and to hold the severed end of the unapplied portion of the strip against the applying roll in position to be applied to the next blank presented to the machine, and means, responsive to the bringing into operative position of apart of the machine preparatory to the operation upon anotherl blank, for moving thecutter to release said end.

l0. i machine 'for applying a strip or' stock to a blank, having in combination, an applying roll over Which the strip runs, a ilanlosupporting roll, means for rotating Yhe rolls, means for severing the strip at a point on the blank and for holding the severed end or the unapplied portion ot the strip in position to be applied to the next ilank, means 'for separating the rolls to permit withdrawing of the finished Work and placing oit the next blank between the rolls, and means responsive to movement ot approach of the rolls for releasing said end.

ll. A machine "for applying a strip of stock to a blank, having in combination, a strip-applying roll, a blank-supporting roll, means tor rotating said rolls, yielding means Jor holding said rolls in operative relation to each other, a cutter, means vfor moving the cutter to sever the strip and tor locking the cutter in position to hold the severed end the nnapplied portion oil' the strip against 'the applying roll, means for separat ing the rolls to permit removal of the iinished Work and insertion of another blank, and means responsive to the release of the roll-separating means for unlocking the cutter and freeing the end.

12. A machine 'for applying a strip of stock to a blank, having in combination, a blank-supporting member, a member for applying the strip to a blank, a strip-severing cutter, and means 'lor moving the cutter so that its cutting edge generates a curved surface.

13. il machine tor applying a strip of stock to a blank, having in combination, a blank-supporting member, a member tor applying the strip to a blank, a strip-severing cutter, and means for moving the cutter' so that its cutting edge generates a curved surtace, such that the free end of the unapplied portion of the strip is held against the applying member.

lil. A machine for applying a strip of stock to a blank, having in combination, an applying roll over which the strip runs, a blank-supporting roll, a strip-severing cutter, and means for moving the cutter so that its cutting edge generates a cylindrical surtace.

l5. A machine for applying a strip of stock to a blank, having in combination, an

lil() applying roll over which the strip runs, a blank-supporting roll, a strip-severing cutter, and means for moving the cutter so that its cutting edge generates a cylindrical surface, the radius oi"Y curvature oiz which is greater than that of the applying roll.

1G. A machine for applying a strip et stock to a blank, having in combination,- a strip-applying roll, a blank-supporting roll, means ttor rotating the rolls, a cutter having a blade curved transversely of its cutting edge, a holder in which the cutter is mounted, a carrier in which the holder is mounted, means whereby the cutter may be adjusted `with respect to the holder and the holder with respect to the carrier, and means for rocking the cutter.

17. A machine ifor applying a strip ot stock to a blank, having in combination, an applying roll over which the strip rims, 'a blank-supporting roll, means for rotating the rolls, a strip-severing cutter, treadle-controlled means for causing the cutter to sever the strip, and means :tor locking the cutter in severing position.

1S. A machine for applying a strip of stock to a blank, having in combination, an applying roll over which the strip runs, a blank-supporting roll, means for rotating the rolls, a strip-severing cutter, treadle-controlled means for causing the cutter to sever the strip, means for locking the cutter in severing position, means for lowering and raising the supporting roll, and means operated by raising of said roll for releasing the cutter.

19. A machine for applying a strip ot stock to a blank having, in combination, a strip applying member, and means for severing the strip and pinching the severed end ot the unapplied portion thereof against the strip applying member.

Q0. A machine for applying a strip of. stock to a blank having, in combination, a strip applying roll, means for rotating said roll` and a cutter' for severing the strip and pinching the severed end ot' the unapplied portion thereot1 against the strip applying roll.

il. A machine Jfor applying a strip of' stock to a blank having, in combination, a strip applying roll, blank supporting means, means for rotating said roll, and means for severing the strip and pinching the severed end of the unapplied portion of the strip against the strip applying roll.

22. A. machine for applying a strip of stock to a blank having, in combination, a strip applying roll, blank supporting means, a strip severing cutter, and means for moving the cutter so that its edge generates a curved surface to cut the strip of stock and pinch the severed end thereof between the cutter and the applying roll.

23. A machine for applying a strip of stock to a blank having, in combination, a strip applying roll, a blank supporting roll, means for rotating the rolls, a cutter comprising a blade curved transversely of its cutting edge, a holder in which the cutter is mounted, a carrier mounted for rocking movement and in which the holder is mounted, and means tor rocking the carrier substantially about the axis of the curvature of the cutter blade to cut the strip of stock and pinch the cut end thereof between the strip applying roll and the cutter.

In testimony whereof I have signed my name to this speciiication.

CHARLES l. STANBON. 

